Bug#967581: libgtk2-perl: depends on deprecated GTK 2

[intrigeri]

Hi,

Simon McVittie (2020-08-04):
> libgtk3-perl is presumably the GTK 3 equivalent, which supersedes this
> package.

Right.

For the record, libgtk2-perl won't be in Bullseye (#912860) and most
of its reverse-dependencies were removed from Debian already.
I'm tracking what's left on
https://udd.debian.org/cgi-bin/bts-usertags.cgi?tag=gtk2-removal&user=debian-perl%40lists.debian.org

> Please leave this bug open, so we can use it to track how many packages
> still depend on GTK 2.

OK :)